Well firstly good luck to your lad.

Secondly, surely at five years old it is way too young to assess their potential? If I were you I'd ask him which he had the most fun at, and go with that. He's far too young to evaluate which is more professional, and if he's that talented then I would imagine that either one of them would be good for his development.

Also consider that by the time he's old enough to sign professional terms, the jacks will be back in league one.